Project report for Ophthalmic lens  is as follows.

Lenses for those with visual impairments that don’t focus on the retina are ophthalmic lenses. Astigmatism can be corrected with the use of lenses. Plastic and glass lenses are only two of the many options available.

People use spectacles, contact lenses worn near the eye, and lenses surgically implanted into the eye to remedy vision issues. A prescription from an ophthalmologist is typically required before purchasing an ophthalmic lens.

Lasers may also be used to cut the appropriate type and form of glass into a rough, round blank, or the pieces can be heated and softened so they can be rolled into a rounded shape and pressed into a mold to get the desired size and curve.

Abrasives such as coarse emery, carborundum, or diamond are next to lap the surfaces into their final shape. Using increasingly more satisfactory grades of one of the abrasives indicated above, lens surfaces are ground on an iron tool, flat or adequately curved.

It’s essential to keep in mind that a rotating cup-shaped device is fixed to the lens such that its axis of rotation crosses the lenses at its center of curvature. You’ll need to tweak your camera’s obliquity to make sure your (concave) lens’ rim is cutting straight through its middle.

The circumference of the lens blank is cut off near the center of the rotating tool for convex lenses. Aspherical surface with the required radius of curvature is formed on the lens when the device and lens revolve about their respective axes.